cost_urban1.m

用MATLAB建立COST模型

function hen = cost_urban1(distancia, frequencia, hte, hre)

if frequencia > 1500
   for k = 1 : length(distancia),
      perda = 46.30 + 33.90*log10(frequencia) - 13.82*log10(hte) + (44.9 - 6.55*log10(hte))*log10(distancia(k));
      perda = perda -(1.1*log10(frequencia)-0.7)*hre - (1.56*log10(frequencia)-0.8);
      hen(k) = perda;
   end 
else
   for k = 1 : length(distancia),
      perda = 69.55 + 26.16*log10(frequencia) - 13.82*log10(hte) + (44.9 - 6.55*log10(hte))*log10(distancia(k));
      hen(k) = perda -(1.1*log10(frequencia)-0.7)*hre - (1.56*log10(frequencia)-0.8);
   end    
end